The coefficient of static friction between a box and a ramp is 0.5. The ramp's incline angle is `30^(@)`. If the box is placed at rest on the ramp, the box will

In Fig. 6-37, a block of mass m = 5.0 kg is at rest on a ramp. The coefficient of static friction between the block and ramp is not known. Find the magnitude of the net force exerted by the ramp on the block.

A block rests on a rough inclined plane making an angle of 30^@ with the horizontal. The coefficient of static friction between the block and the plane is 0.8. If the frictional force on the block is 10N, the mass of the block (in kg) is

The coefficient of static friction between the box and the train's floor is 0.2. The maximum acceleration of the train in which a box lying on its floor will remain stationary is ("Take g"=10ms^(-2))

A block rests on a rough inclined plane making an angle of 30° with the horizontal. The coefficient of static friction between the block and inclined plane is 0.8. If the frictional force on the block is 10 N, the mass of the block is

A box, heavier than you is placed on a rough floor. The coefficient of static friction between the box and the floor is the same as that between your shoes and the floor. Can you displace the box across.the floor.

A box of mass 2 kg is placed on the roof of a car. The box would remain stationary until the car attains a maximum acceleration. Coefficient of static friction between the box and the roof of the car is 0.2 and 1 g=10" ms"^(-2) . The maximum acceleration of the car, for the box to remain stationary, is

A box mass m kg is placed on the rear side of an open truck acceleration at 4ms^(-2) . The coefficient of friction between the box ant the surface below it is 0.4 . The net acceleration of the box with respect to the truck is zero. The value of m is.

A student wants to determine the coefficients of static frction and kinetic friciton between a box and a plank. She places the box on the plank and gradually raises on end on of the plank. When the angle of inclination with horizontal reaches 30^(@) , the box stars to slip, and it then slides 2.5m dwon the plank in 4.0 s at constant acceleration. What are (a) the coefficient of static frictio and (b) the coefficient of kinetic friction between the box and the plank ?