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Laws of Motion

270121 A body is struck to the front part of the truck. The coefficient of friction between the body and truck is \(\mu\). The minimum acceleration with which the truck should travel so that the body does not fall down is

1 \(\mu / g\)
2 \(\mu g\)
3 \(g / \mu\)
4 \(\mu^{2} g\)
Laws of Motion

270122 When a bicycle is in motion, the force of friction exerted by the ground on the two wheels is such that it acts

1 in the backward direction on the front wheel and in the forward direction on the rear wheel
2 in the forward direction on the front wheel and in the backward direction on the rear wheel
3 in the backward direction on both the front and rear wheels
4 in the forward direction on both the front and rear wheels
Laws of Motion

270123 A boy of mass \(M\) is applying a horizontal force to slide a box of mass \(M_{1}\) on a rough horizontal surface. The coefficient of friction between the shoe of the boy and the floor is \(\mu\) and that between the box and the floor is ' \(\mu_{1}\) 'In which of the following cases is it certainly not possible to slide the box?

1 \(\mu<\mu_{1} ; M
2 \(\mu\lt \mu_{1} ; M\lt M_{1}\)
3 \(\mu<\mu_{1}\); \(M\lt M_{1}\)
4 \(\mu\lt \mu_{1} ; M
Laws of Motion

270124 When a person walks on a rough surface

1 the frictional force exerted by the surface keeps him moving
2 reaction of the force applied by the man on the surface keeps him moving
3 the force applied by the man keep him moving
4 weight of the man keeps him moving
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Laws of Motion

270121 A body is struck to the front part of the truck. The coefficient of friction between the body and truck is \(\mu\). The minimum acceleration with which the truck should travel so that the body does not fall down is

1 \(\mu / g\)
2 \(\mu g\)
3 \(g / \mu\)
4 \(\mu^{2} g\)
Laws of Motion

270122 When a bicycle is in motion, the force of friction exerted by the ground on the two wheels is such that it acts

1 in the backward direction on the front wheel and in the forward direction on the rear wheel
2 in the forward direction on the front wheel and in the backward direction on the rear wheel
3 in the backward direction on both the front and rear wheels
4 in the forward direction on both the front and rear wheels
Laws of Motion

270123 A boy of mass \(M\) is applying a horizontal force to slide a box of mass \(M_{1}\) on a rough horizontal surface. The coefficient of friction between the shoe of the boy and the floor is \(\mu\) and that between the box and the floor is ' \(\mu_{1}\) 'In which of the following cases is it certainly not possible to slide the box?

1 \(\mu<\mu_{1} ; M
2 \(\mu\lt \mu_{1} ; M\lt M_{1}\)
3 \(\mu<\mu_{1}\); \(M\lt M_{1}\)
4 \(\mu\lt \mu_{1} ; M
Laws of Motion

270124 When a person walks on a rough surface

1 the frictional force exerted by the surface keeps him moving
2 reaction of the force applied by the man on the surface keeps him moving
3 the force applied by the man keep him moving
4 weight of the man keeps him moving
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Laws of Motion

270121 A body is struck to the front part of the truck. The coefficient of friction between the body and truck is \(\mu\). The minimum acceleration with which the truck should travel so that the body does not fall down is

1 \(\mu / g\)
2 \(\mu g\)
3 \(g / \mu\)
4 \(\mu^{2} g\)
Laws of Motion

270122 When a bicycle is in motion, the force of friction exerted by the ground on the two wheels is such that it acts

1 in the backward direction on the front wheel and in the forward direction on the rear wheel
2 in the forward direction on the front wheel and in the backward direction on the rear wheel
3 in the backward direction on both the front and rear wheels
4 in the forward direction on both the front and rear wheels
Laws of Motion

270123 A boy of mass \(M\) is applying a horizontal force to slide a box of mass \(M_{1}\) on a rough horizontal surface. The coefficient of friction between the shoe of the boy and the floor is \(\mu\) and that between the box and the floor is ' \(\mu_{1}\) 'In which of the following cases is it certainly not possible to slide the box?

1 \(\mu<\mu_{1} ; M
2 \(\mu\lt \mu_{1} ; M\lt M_{1}\)
3 \(\mu<\mu_{1}\); \(M\lt M_{1}\)
4 \(\mu\lt \mu_{1} ; M
Laws of Motion

270124 When a person walks on a rough surface

1 the frictional force exerted by the surface keeps him moving
2 reaction of the force applied by the man on the surface keeps him moving
3 the force applied by the man keep him moving
4 weight of the man keeps him moving
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Laws of Motion

270121 A body is struck to the front part of the truck. The coefficient of friction between the body and truck is \(\mu\). The minimum acceleration with which the truck should travel so that the body does not fall down is

1 \(\mu / g\)
2 \(\mu g\)
3 \(g / \mu\)
4 \(\mu^{2} g\)
Laws of Motion

270122 When a bicycle is in motion, the force of friction exerted by the ground on the two wheels is such that it acts

1 in the backward direction on the front wheel and in the forward direction on the rear wheel
2 in the forward direction on the front wheel and in the backward direction on the rear wheel
3 in the backward direction on both the front and rear wheels
4 in the forward direction on both the front and rear wheels
Laws of Motion

270123 A boy of mass \(M\) is applying a horizontal force to slide a box of mass \(M_{1}\) on a rough horizontal surface. The coefficient of friction between the shoe of the boy and the floor is \(\mu\) and that between the box and the floor is ' \(\mu_{1}\) 'In which of the following cases is it certainly not possible to slide the box?

1 \(\mu<\mu_{1} ; M
2 \(\mu\lt \mu_{1} ; M\lt M_{1}\)
3 \(\mu<\mu_{1}\); \(M\lt M_{1}\)
4 \(\mu\lt \mu_{1} ; M
Laws of Motion

270124 When a person walks on a rough surface

1 the frictional force exerted by the surface keeps him moving
2 reaction of the force applied by the man on the surface keeps him moving
3 the force applied by the man keep him moving
4 weight of the man keeps him moving
For More Updates join with Us