Chapter 7 – Friction
The friction acting on the upper block is
09
Sep
The friction acting on the upper block is The friction acting on the upper block is September 9, 2020 Category: Cengage NEET by C.P Singh , Chapter 7 - Friction , Part 1 ,
The rear side of a truck is open and a box of mass 2 kg is placed on the truck 8 meters away from the open end. μ = 0.1 and g = 10m/s^2. The truck starts from rest with an acceleration of 2m/s^2 on a straight road. The box will fall off the truck when it is at distance from the starting point equal to
09
Sep
The rear side of a truck is open and a box of mass 2 kg is placed on the truck 8 meters away from the open end. μ = 0.1 and g = 10m/s^2. The truck starts from rest with an acceleration of 2m/s^2 on a straight road. The box will fall off the truck [...]
Two blocks of mass m1 = 6 kg and m2 = 3 kg are as shown in the diagram. Coefficient of friction between m1 and m2 between m1 and the surface is 0.5 and 0.4 , respectively . The maximum horizontal force that can be applied to the mass m1 so that they move without separation is
09
Sep
Two blocks of mass m1 = 6 kg and m2 = 3 kg are as shown in the diagram. Coefficient of friction between m1 and m2 between m1 and the surface is 0.5 and 0.4 , respectively . The maximum horizontal force that can be applied to the mass m1 so that they move without [...]
A block B is placed on block A.The mass of block B is less than the mass of block A. Friction exists between the blocks, whereas the ground on which the block A is placed is taken to be smooth.A horizontal force F increasing linearly with time begins to act on B.The acceleration aA and aB of block A and B respectively are plotted against L .The correctly plotted graph is
09
Sep
A block B is placed on block A.The mass of block B is less than the mass of block A. Friction exists between the blocks, whereas the ground on which the block A is placed is taken to be smooth.A horizontal force F increasing linearly with time begins to act on B.The acceleration aA and [...]
A 40 kg slab rests on a frictionless floor as shown in the figure. A 10 kg block rests on the top of the slab. The static coefficient of friction between the block and slab is 0.60 while the kinetic friction is 0.40 .A horizontal force 100 N acts upon the 10 kg block the resulting acceleration of the slab will be.
09
Sep
A 40 kg slab rests on a frictionless floor as shown in the figure. A 10 kg block rests on the top of the slab. The static coefficient of friction between the block and slab is 0.60 while the kinetic friction is 0.40 .A horizontal force 100 N acts upon the 10 kg block the [...]
Consider the situation as shown in the diagram. The coefficient of friction between the block is 0.5. The acceleration of the lower block is
09
Sep
Consider the situation as shown in the diagram. The coefficient of friction between the block is 0.5. The acceleration of the lower block is Consider the situation as shown in the diagram. The coefficient of friction between the block is 0.5. The acceleration of the lower block is September 9, 2020 Category: Cengage NEET by [...]
A block of mass m is in contact with the cart as shown in figure. The coefficient of static friction between the block and the cart is u. The acceleration a of the cart that will prevent the block from falling satisfies
09
Sep
A block of mass m is in contact with the cart as shown in figure. The coefficient of static friction between the block and the cart is u. The acceleration a of the cart that will prevent the block from falling satisfies A car starts from rest on a 1600 m long bridge. The coefficient [...]
A block is placed on a rough floor and a horizontal force F is applied on it.The force of friction f by the floor on the block is measured for different values of F and a graph is plotted between them.
09
Sep
A block is placed on a rough floor and a horizontal force F is applied on it.The force of friction f by the floor on the block is measured for different values of F and a graph is plotted between them. A car starts from rest on a 1600 m long bridge. The coefficient of [...]
A boy of mass M is applying a horizontal force to slide a box of mass M on a rough horizontal surface. The coefficient of friction between the shoe of the boy and the floor is μ and that between the box and the floor is μ. In which of the following cases it is certainly not possible to slide the box ?
09
Sep
A boy of mass M is applying a horizontal force to slide a box of mass M on a rough horizontal surface. The coefficient of friction between the shoe of the boy and the floor is μ and that between the box and the floor is μ. In which of the following cases it is [...]
A car starts from rest on a 1600 m long bridge. The coefficient of friction between the tyre and road is 0.8. The minimum time taken by the car to cross the bridge is
09
Sep
A car starts from rest on a 1600 m long bridge. The coefficient of friction between the tyre and road is 0.8. The minimum time taken by the car to cross the bridge is A car starts from rest on a 1600 m long bridge. The coefficient of friction between the tyre and road is [...]