04. Friction, and Inclined Plane Friction Motion
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Laws of Motion

146205 An ice cart of mass \(60 \mathrm{~kg}\) rests on a horizontal snow patch with coefficient of static friction \(\frac{1}{3}\). Assuming that there is no vertical acceleration, find the magnitude of the maximum horizontal force required to move the ice cart.
\(\left(\mathrm{g}=9.8 \mathrm{~ms}^{-2}\right)\)

1 \(100 \mathrm{~N}\)
2 \(110 \mathrm{~N}\)
3 \(209 \mathrm{~N}\)
4 \(206 \mathrm{~N}\)
5 \(196 \mathrm{~N}\)
Laws of Motion

146206 If a body have kinetic energy \(T\), moving on a rough horizontal surface stops at distance \(y\). The frictional force exerted on the body is

1 \(\frac{\mathrm{T}}{\sqrt{\mathrm{y}}}\)
2 \(\frac{\sqrt{T}}{y}\)
3 \(\mathrm{yT}\)
4 \(\frac{\mathrm{T}}{\mathrm{y}}\)
Laws of Motion

146207 If a ladder weighing \(250 \mathrm{~N}\) is placed against a smooth vertical wall having coefficient of friction between it and floor is 0.3 , then what is the maximum force of friction available at the point of contact between the ladder and the floor?

1 \(75 \mathrm{~N}\)
2 \(50 \mathrm{~N}\)
3 \(35 \mathrm{~N}\)
4 \(25 \mathrm{~N}\)
Laws of Motion

146208 A body of mass \(M\) is kept on a rough horizontal surface (friction coefficient \(\mu\) ). A person is trying to pull the body by applying a horizontal force but the body is not moving. The force by the horizontal surface on the surface of the body is \(F\), where

1 \(\mathrm{F}=\mathrm{Mg}\)
2 \(F=\mu \mathrm{mgF}\)
3 \(\mathrm{Mg} \leq \mathrm{f} \leq \mathrm{Mg} \sqrt{1+\mu^{2}}\)
4 \(\operatorname{Mg} \geq \mathrm{f} \geq \mathrm{Mg} \sqrt{1+\mu^{2}}\)
Laws of Motion

146205 An ice cart of mass \(60 \mathrm{~kg}\) rests on a horizontal snow patch with coefficient of static friction \(\frac{1}{3}\). Assuming that there is no vertical acceleration, find the magnitude of the maximum horizontal force required to move the ice cart.
\(\left(\mathrm{g}=9.8 \mathrm{~ms}^{-2}\right)\)

1 \(100 \mathrm{~N}\)
2 \(110 \mathrm{~N}\)
3 \(209 \mathrm{~N}\)
4 \(206 \mathrm{~N}\)
5 \(196 \mathrm{~N}\)
Laws of Motion

146206 If a body have kinetic energy \(T\), moving on a rough horizontal surface stops at distance \(y\). The frictional force exerted on the body is

1 \(\frac{\mathrm{T}}{\sqrt{\mathrm{y}}}\)
2 \(\frac{\sqrt{T}}{y}\)
3 \(\mathrm{yT}\)
4 \(\frac{\mathrm{T}}{\mathrm{y}}\)
Laws of Motion

146207 If a ladder weighing \(250 \mathrm{~N}\) is placed against a smooth vertical wall having coefficient of friction between it and floor is 0.3 , then what is the maximum force of friction available at the point of contact between the ladder and the floor?

1 \(75 \mathrm{~N}\)
2 \(50 \mathrm{~N}\)
3 \(35 \mathrm{~N}\)
4 \(25 \mathrm{~N}\)
Laws of Motion

146208 A body of mass \(M\) is kept on a rough horizontal surface (friction coefficient \(\mu\) ). A person is trying to pull the body by applying a horizontal force but the body is not moving. The force by the horizontal surface on the surface of the body is \(F\), where

1 \(\mathrm{F}=\mathrm{Mg}\)
2 \(F=\mu \mathrm{mgF}\)
3 \(\mathrm{Mg} \leq \mathrm{f} \leq \mathrm{Mg} \sqrt{1+\mu^{2}}\)
4 \(\operatorname{Mg} \geq \mathrm{f} \geq \mathrm{Mg} \sqrt{1+\mu^{2}}\)
Laws of Motion

146205 An ice cart of mass \(60 \mathrm{~kg}\) rests on a horizontal snow patch with coefficient of static friction \(\frac{1}{3}\). Assuming that there is no vertical acceleration, find the magnitude of the maximum horizontal force required to move the ice cart.
\(\left(\mathrm{g}=9.8 \mathrm{~ms}^{-2}\right)\)

1 \(100 \mathrm{~N}\)
2 \(110 \mathrm{~N}\)
3 \(209 \mathrm{~N}\)
4 \(206 \mathrm{~N}\)
5 \(196 \mathrm{~N}\)
Laws of Motion

146206 If a body have kinetic energy \(T\), moving on a rough horizontal surface stops at distance \(y\). The frictional force exerted on the body is

1 \(\frac{\mathrm{T}}{\sqrt{\mathrm{y}}}\)
2 \(\frac{\sqrt{T}}{y}\)
3 \(\mathrm{yT}\)
4 \(\frac{\mathrm{T}}{\mathrm{y}}\)
Laws of Motion

146207 If a ladder weighing \(250 \mathrm{~N}\) is placed against a smooth vertical wall having coefficient of friction between it and floor is 0.3 , then what is the maximum force of friction available at the point of contact between the ladder and the floor?

1 \(75 \mathrm{~N}\)
2 \(50 \mathrm{~N}\)
3 \(35 \mathrm{~N}\)
4 \(25 \mathrm{~N}\)
Laws of Motion

146208 A body of mass \(M\) is kept on a rough horizontal surface (friction coefficient \(\mu\) ). A person is trying to pull the body by applying a horizontal force but the body is not moving. The force by the horizontal surface on the surface of the body is \(F\), where

1 \(\mathrm{F}=\mathrm{Mg}\)
2 \(F=\mu \mathrm{mgF}\)
3 \(\mathrm{Mg} \leq \mathrm{f} \leq \mathrm{Mg} \sqrt{1+\mu^{2}}\)
4 \(\operatorname{Mg} \geq \mathrm{f} \geq \mathrm{Mg} \sqrt{1+\mu^{2}}\)
Laws of Motion

146205 An ice cart of mass \(60 \mathrm{~kg}\) rests on a horizontal snow patch with coefficient of static friction \(\frac{1}{3}\). Assuming that there is no vertical acceleration, find the magnitude of the maximum horizontal force required to move the ice cart.
\(\left(\mathrm{g}=9.8 \mathrm{~ms}^{-2}\right)\)

1 \(100 \mathrm{~N}\)
2 \(110 \mathrm{~N}\)
3 \(209 \mathrm{~N}\)
4 \(206 \mathrm{~N}\)
5 \(196 \mathrm{~N}\)
Laws of Motion

146206 If a body have kinetic energy \(T\), moving on a rough horizontal surface stops at distance \(y\). The frictional force exerted on the body is

1 \(\frac{\mathrm{T}}{\sqrt{\mathrm{y}}}\)
2 \(\frac{\sqrt{T}}{y}\)
3 \(\mathrm{yT}\)
4 \(\frac{\mathrm{T}}{\mathrm{y}}\)
Laws of Motion

146207 If a ladder weighing \(250 \mathrm{~N}\) is placed against a smooth vertical wall having coefficient of friction between it and floor is 0.3 , then what is the maximum force of friction available at the point of contact between the ladder and the floor?

1 \(75 \mathrm{~N}\)
2 \(50 \mathrm{~N}\)
3 \(35 \mathrm{~N}\)
4 \(25 \mathrm{~N}\)
Laws of Motion

146208 A body of mass \(M\) is kept on a rough horizontal surface (friction coefficient \(\mu\) ). A person is trying to pull the body by applying a horizontal force but the body is not moving. The force by the horizontal surface on the surface of the body is \(F\), where

1 \(\mathrm{F}=\mathrm{Mg}\)
2 \(F=\mu \mathrm{mgF}\)
3 \(\mathrm{Mg} \leq \mathrm{f} \leq \mathrm{Mg} \sqrt{1+\mu^{2}}\)
4 \(\operatorname{Mg} \geq \mathrm{f} \geq \mathrm{Mg} \sqrt{1+\mu^{2}}\)