Friction
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PHXI05:LAWS OF MOTION

363390 A block placed on a horizontal surface is being pushed by a force \(F\) making an angle \(\theta \) with the vertical. The coefficient of friction between block and surface is \(\mu \). The force required to slide the block with uniform velocity on the floor is:

1 \(\frac{{\mu mg}}{{(\sin \theta - \mu \cos \theta )}}\)
2 \(\frac{{(\sin \theta - \mu \cos \theta )}}{{\mu mg}}\)
3 \(\mu mg\)
4 \({\rm{None }}\,{\rm{of }}\,{\rm{these}}\)
PHXI05:LAWS OF MOTION

363391 As shown in the figure, a block of mass \(10\;kg\) lying on a horizontal surface is pulled by a force \(F\) acting at an angle \(30^{\circ}\), with horizontal. For \(\mu_{s}=0.25\), the block will just start to move for the value of \(F\) [Given \(g = 10\,m{s^{ - 2}}\)]
supporting img

1 \({35.7\,N}\)
2 \({33.3\,N}\)
3 \({20\,N}\)
4 \({25.2\,N}\)
JEE - 2023
PHXI05:LAWS OF MOTION

363392 Assertion :
The frictional force acts only when the bodies are in contact.
Reason :
When a bicycle is in motion, the force of friction exerted by the ground on the two wheels is always in forward direction.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
PHXI05:LAWS OF MOTION

363393 A car is moving along a straight horizontal road with a speed \({v_0}\). If the coefficient of friction between the tyres and the road is \(\mu ,\) the shortest distance in which the car can be stopped is

1 \(\frac{{v_0^2}}{{2\,\mu g}}\)
2 \(\frac{{{v_0}}}{{\mu g}}\)
3 \({\left( {\frac{{{v_0}}}{{\mu g}}} \right)^2}\)
4 \(\frac{{{v_0}}}{\mu }\)
PHXI05:LAWS OF MOTION

363394 To avoid slipping while walking on ice, one should take smaller steps because of the

1 Friction of ice is large
2 Larger normal reaction
3 Friction of ice is small
4 Smaller normal reaction
Join With Us for More Updates
PHXI05:LAWS OF MOTION

363390 A block placed on a horizontal surface is being pushed by a force \(F\) making an angle \(\theta \) with the vertical. The coefficient of friction between block and surface is \(\mu \). The force required to slide the block with uniform velocity on the floor is:

1 \(\frac{{\mu mg}}{{(\sin \theta - \mu \cos \theta )}}\)
2 \(\frac{{(\sin \theta - \mu \cos \theta )}}{{\mu mg}}\)
3 \(\mu mg\)
4 \({\rm{None }}\,{\rm{of }}\,{\rm{these}}\)
PHXI05:LAWS OF MOTION

363391 As shown in the figure, a block of mass \(10\;kg\) lying on a horizontal surface is pulled by a force \(F\) acting at an angle \(30^{\circ}\), with horizontal. For \(\mu_{s}=0.25\), the block will just start to move for the value of \(F\) [Given \(g = 10\,m{s^{ - 2}}\)]
supporting img

1 \({35.7\,N}\)
2 \({33.3\,N}\)
3 \({20\,N}\)
4 \({25.2\,N}\)
JEE - 2023
PHXI05:LAWS OF MOTION

363392 Assertion :
The frictional force acts only when the bodies are in contact.
Reason :
When a bicycle is in motion, the force of friction exerted by the ground on the two wheels is always in forward direction.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
PHXI05:LAWS OF MOTION

363393 A car is moving along a straight horizontal road with a speed \({v_0}\). If the coefficient of friction between the tyres and the road is \(\mu ,\) the shortest distance in which the car can be stopped is

1 \(\frac{{v_0^2}}{{2\,\mu g}}\)
2 \(\frac{{{v_0}}}{{\mu g}}\)
3 \({\left( {\frac{{{v_0}}}{{\mu g}}} \right)^2}\)
4 \(\frac{{{v_0}}}{\mu }\)
PHXI05:LAWS OF MOTION

363394 To avoid slipping while walking on ice, one should take smaller steps because of the

1 Friction of ice is large
2 Larger normal reaction
3 Friction of ice is small
4 Smaller normal reaction
For More Updates join with Us
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PHXI05:LAWS OF MOTION

363390 A block placed on a horizontal surface is being pushed by a force \(F\) making an angle \(\theta \) with the vertical. The coefficient of friction between block and surface is \(\mu \). The force required to slide the block with uniform velocity on the floor is:

1 \(\frac{{\mu mg}}{{(\sin \theta - \mu \cos \theta )}}\)
2 \(\frac{{(\sin \theta - \mu \cos \theta )}}{{\mu mg}}\)
3 \(\mu mg\)
4 \({\rm{None }}\,{\rm{of }}\,{\rm{these}}\)
PHXI05:LAWS OF MOTION

363391 As shown in the figure, a block of mass \(10\;kg\) lying on a horizontal surface is pulled by a force \(F\) acting at an angle \(30^{\circ}\), with horizontal. For \(\mu_{s}=0.25\), the block will just start to move for the value of \(F\) [Given \(g = 10\,m{s^{ - 2}}\)]
supporting img

1 \({35.7\,N}\)
2 \({33.3\,N}\)
3 \({20\,N}\)
4 \({25.2\,N}\)
JEE - 2023
PHXI05:LAWS OF MOTION

363392 Assertion :
The frictional force acts only when the bodies are in contact.
Reason :
When a bicycle is in motion, the force of friction exerted by the ground on the two wheels is always in forward direction.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
PHXI05:LAWS OF MOTION

363393 A car is moving along a straight horizontal road with a speed \({v_0}\). If the coefficient of friction between the tyres and the road is \(\mu ,\) the shortest distance in which the car can be stopped is

1 \(\frac{{v_0^2}}{{2\,\mu g}}\)
2 \(\frac{{{v_0}}}{{\mu g}}\)
3 \({\left( {\frac{{{v_0}}}{{\mu g}}} \right)^2}\)
4 \(\frac{{{v_0}}}{\mu }\)
PHXI05:LAWS OF MOTION

363394 To avoid slipping while walking on ice, one should take smaller steps because of the

1 Friction of ice is large
2 Larger normal reaction
3 Friction of ice is small
4 Smaller normal reaction
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PHXI05:LAWS OF MOTION

363390 A block placed on a horizontal surface is being pushed by a force \(F\) making an angle \(\theta \) with the vertical. The coefficient of friction between block and surface is \(\mu \). The force required to slide the block with uniform velocity on the floor is:

1 \(\frac{{\mu mg}}{{(\sin \theta - \mu \cos \theta )}}\)
2 \(\frac{{(\sin \theta - \mu \cos \theta )}}{{\mu mg}}\)
3 \(\mu mg\)
4 \({\rm{None }}\,{\rm{of }}\,{\rm{these}}\)
PHXI05:LAWS OF MOTION

363391 As shown in the figure, a block of mass \(10\;kg\) lying on a horizontal surface is pulled by a force \(F\) acting at an angle \(30^{\circ}\), with horizontal. For \(\mu_{s}=0.25\), the block will just start to move for the value of \(F\) [Given \(g = 10\,m{s^{ - 2}}\)]
supporting img

1 \({35.7\,N}\)
2 \({33.3\,N}\)
3 \({20\,N}\)
4 \({25.2\,N}\)
JEE - 2023
PHXI05:LAWS OF MOTION

363392 Assertion :
The frictional force acts only when the bodies are in contact.
Reason :
When a bicycle is in motion, the force of friction exerted by the ground on the two wheels is always in forward direction.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
PHXI05:LAWS OF MOTION

363393 A car is moving along a straight horizontal road with a speed \({v_0}\). If the coefficient of friction between the tyres and the road is \(\mu ,\) the shortest distance in which the car can be stopped is

1 \(\frac{{v_0^2}}{{2\,\mu g}}\)
2 \(\frac{{{v_0}}}{{\mu g}}\)
3 \({\left( {\frac{{{v_0}}}{{\mu g}}} \right)^2}\)
4 \(\frac{{{v_0}}}{\mu }\)
PHXI05:LAWS OF MOTION

363394 To avoid slipping while walking on ice, one should take smaller steps because of the

1 Friction of ice is large
2 Larger normal reaction
3 Friction of ice is small
4 Smaller normal reaction
Join With Us for More Updates
PHXI05:LAWS OF MOTION

363390 A block placed on a horizontal surface is being pushed by a force \(F\) making an angle \(\theta \) with the vertical. The coefficient of friction between block and surface is \(\mu \). The force required to slide the block with uniform velocity on the floor is:

1 \(\frac{{\mu mg}}{{(\sin \theta - \mu \cos \theta )}}\)
2 \(\frac{{(\sin \theta - \mu \cos \theta )}}{{\mu mg}}\)
3 \(\mu mg\)
4 \({\rm{None }}\,{\rm{of }}\,{\rm{these}}\)
PHXI05:LAWS OF MOTION

363391 As shown in the figure, a block of mass \(10\;kg\) lying on a horizontal surface is pulled by a force \(F\) acting at an angle \(30^{\circ}\), with horizontal. For \(\mu_{s}=0.25\), the block will just start to move for the value of \(F\) [Given \(g = 10\,m{s^{ - 2}}\)]
supporting img

1 \({35.7\,N}\)
2 \({33.3\,N}\)
3 \({20\,N}\)
4 \({25.2\,N}\)
JEE - 2023
PHXI05:LAWS OF MOTION

363392 Assertion :
The frictional force acts only when the bodies are in contact.
Reason :
When a bicycle is in motion, the force of friction exerted by the ground on the two wheels is always in forward direction.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
PHXI05:LAWS OF MOTION

363393 A car is moving along a straight horizontal road with a speed \({v_0}\). If the coefficient of friction between the tyres and the road is \(\mu ,\) the shortest distance in which the car can be stopped is

1 \(\frac{{v_0^2}}{{2\,\mu g}}\)
2 \(\frac{{{v_0}}}{{\mu g}}\)
3 \({\left( {\frac{{{v_0}}}{{\mu g}}} \right)^2}\)
4 \(\frac{{{v_0}}}{\mu }\)
PHXI05:LAWS OF MOTION

363394 To avoid slipping while walking on ice, one should take smaller steps because of the

1 Friction of ice is large
2 Larger normal reaction
3 Friction of ice is small
4 Smaller normal reaction