Friction
PHXI05:LAWS OF MOTION

363386 If the coefficient of friction between an \(ANT\) and hemispherical bowl is \(\mu \) and radius of bowl is \(R\), then upto what maximum height \(ANT\) may crawl?

1 \(R\left[ {1 - \frac{1}{{\sqrt {1 + {\mu ^2}} }}} \right]\)
2 \(R\left[ {1 + \frac{1}{{\sqrt {1 + {\mu ^2}} }}} \right]\)
3 \(\frac{{\sqrt {1 + {R^2}} }}{{R\mu }}\)
4 \(\frac{{\sqrt {1 + {R^2}} }}{\mu }\)
PHXI05:LAWS OF MOTION

363387 A block of mass \(m\) is placed on a surface with a vertical cross section given by \(y = \frac{{{x^3}}}{6}\). If the coefficient of friction is 0.5, the maximum height above the ground at which the block can be placed without slipping is

1 \(1/6\,m\)
2 \(2/3\,m\)
3 \(1/3\,m\)
4 \(1/2\,m\)
PHXI05:LAWS OF MOTION

363388 A block of masss \(m=3 {~kg}\) is resting over a rough horizontal surface having coefficient of friction \(\mu=1 / 3\). The block is pulled to the right by applying a force \(F\), inclined at angle \(37^{\circ}\) with the horizontal as shown in figure. The force increases with time according to law \(F=2 t\) newton.
supporting img
If the velocity of the block at \(t = 10\,\,\sec \) is found to be \(\dfrac{25}{N} {~ms}^{2}\). Find the value of '\(N\)'. \(\left(g=10 {~ms}^{-2}\right)\)

1 2
2 1
3 3
4 5
PHXI05:LAWS OF MOTION

363389 A block of mass 0.1 \(kg\) is held against a wall applying a horizontal force of 5 \(N\) on the block. If the coefficient of friction between the block and the wall is 0.5, the magnitude of the frictional force acting the block is

1 \(2.5\,N\)
2 \(0.98\,N\)
3 \(4.9\,N\)
4 \(0.49\,N\)
PHXI05:LAWS OF MOTION

363386 If the coefficient of friction between an \(ANT\) and hemispherical bowl is \(\mu \) and radius of bowl is \(R\), then upto what maximum height \(ANT\) may crawl?

1 \(R\left[ {1 - \frac{1}{{\sqrt {1 + {\mu ^2}} }}} \right]\)
2 \(R\left[ {1 + \frac{1}{{\sqrt {1 + {\mu ^2}} }}} \right]\)
3 \(\frac{{\sqrt {1 + {R^2}} }}{{R\mu }}\)
4 \(\frac{{\sqrt {1 + {R^2}} }}{\mu }\)
PHXI05:LAWS OF MOTION

363387 A block of mass \(m\) is placed on a surface with a vertical cross section given by \(y = \frac{{{x^3}}}{6}\). If the coefficient of friction is 0.5, the maximum height above the ground at which the block can be placed without slipping is

1 \(1/6\,m\)
2 \(2/3\,m\)
3 \(1/3\,m\)
4 \(1/2\,m\)
PHXI05:LAWS OF MOTION

363388 A block of masss \(m=3 {~kg}\) is resting over a rough horizontal surface having coefficient of friction \(\mu=1 / 3\). The block is pulled to the right by applying a force \(F\), inclined at angle \(37^{\circ}\) with the horizontal as shown in figure. The force increases with time according to law \(F=2 t\) newton.
supporting img
If the velocity of the block at \(t = 10\,\,\sec \) is found to be \(\dfrac{25}{N} {~ms}^{2}\). Find the value of '\(N\)'. \(\left(g=10 {~ms}^{-2}\right)\)

1 2
2 1
3 3
4 5
PHXI05:LAWS OF MOTION

363389 A block of mass 0.1 \(kg\) is held against a wall applying a horizontal force of 5 \(N\) on the block. If the coefficient of friction between the block and the wall is 0.5, the magnitude of the frictional force acting the block is

1 \(2.5\,N\)
2 \(0.98\,N\)
3 \(4.9\,N\)
4 \(0.49\,N\)
PHXI05:LAWS OF MOTION

363386 If the coefficient of friction between an \(ANT\) and hemispherical bowl is \(\mu \) and radius of bowl is \(R\), then upto what maximum height \(ANT\) may crawl?

1 \(R\left[ {1 - \frac{1}{{\sqrt {1 + {\mu ^2}} }}} \right]\)
2 \(R\left[ {1 + \frac{1}{{\sqrt {1 + {\mu ^2}} }}} \right]\)
3 \(\frac{{\sqrt {1 + {R^2}} }}{{R\mu }}\)
4 \(\frac{{\sqrt {1 + {R^2}} }}{\mu }\)
PHXI05:LAWS OF MOTION

363387 A block of mass \(m\) is placed on a surface with a vertical cross section given by \(y = \frac{{{x^3}}}{6}\). If the coefficient of friction is 0.5, the maximum height above the ground at which the block can be placed without slipping is

1 \(1/6\,m\)
2 \(2/3\,m\)
3 \(1/3\,m\)
4 \(1/2\,m\)
PHXI05:LAWS OF MOTION

363388 A block of masss \(m=3 {~kg}\) is resting over a rough horizontal surface having coefficient of friction \(\mu=1 / 3\). The block is pulled to the right by applying a force \(F\), inclined at angle \(37^{\circ}\) with the horizontal as shown in figure. The force increases with time according to law \(F=2 t\) newton.
supporting img
If the velocity of the block at \(t = 10\,\,\sec \) is found to be \(\dfrac{25}{N} {~ms}^{2}\). Find the value of '\(N\)'. \(\left(g=10 {~ms}^{-2}\right)\)

1 2
2 1
3 3
4 5
PHXI05:LAWS OF MOTION

363389 A block of mass 0.1 \(kg\) is held against a wall applying a horizontal force of 5 \(N\) on the block. If the coefficient of friction between the block and the wall is 0.5, the magnitude of the frictional force acting the block is

1 \(2.5\,N\)
2 \(0.98\,N\)
3 \(4.9\,N\)
4 \(0.49\,N\)
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PHXI05:LAWS OF MOTION

363386 If the coefficient of friction between an \(ANT\) and hemispherical bowl is \(\mu \) and radius of bowl is \(R\), then upto what maximum height \(ANT\) may crawl?

1 \(R\left[ {1 - \frac{1}{{\sqrt {1 + {\mu ^2}} }}} \right]\)
2 \(R\left[ {1 + \frac{1}{{\sqrt {1 + {\mu ^2}} }}} \right]\)
3 \(\frac{{\sqrt {1 + {R^2}} }}{{R\mu }}\)
4 \(\frac{{\sqrt {1 + {R^2}} }}{\mu }\)
PHXI05:LAWS OF MOTION

363387 A block of mass \(m\) is placed on a surface with a vertical cross section given by \(y = \frac{{{x^3}}}{6}\). If the coefficient of friction is 0.5, the maximum height above the ground at which the block can be placed without slipping is

1 \(1/6\,m\)
2 \(2/3\,m\)
3 \(1/3\,m\)
4 \(1/2\,m\)
PHXI05:LAWS OF MOTION

363388 A block of masss \(m=3 {~kg}\) is resting over a rough horizontal surface having coefficient of friction \(\mu=1 / 3\). The block is pulled to the right by applying a force \(F\), inclined at angle \(37^{\circ}\) with the horizontal as shown in figure. The force increases with time according to law \(F=2 t\) newton.
supporting img
If the velocity of the block at \(t = 10\,\,\sec \) is found to be \(\dfrac{25}{N} {~ms}^{2}\). Find the value of '\(N\)'. \(\left(g=10 {~ms}^{-2}\right)\)

1 2
2 1
3 3
4 5
PHXI05:LAWS OF MOTION

363389 A block of mass 0.1 \(kg\) is held against a wall applying a horizontal force of 5 \(N\) on the block. If the coefficient of friction between the block and the wall is 0.5, the magnitude of the frictional force acting the block is

1 \(2.5\,N\)
2 \(0.98\,N\)
3 \(4.9\,N\)
4 \(0.49\,N\)