Q1. A 563 kg bear grasping a vertical tree slides down at a constant velocity. The acceleration of gravity is 10 m/s2. What is the friction force that acts on the bear? Reply in units of N.
Q2. A 3.2 kg bag of groceries is in stability on an incline of angle θ = 15°. Find the magnitude of the normal force on the bag.
A 2.38 kg book is dropped from a height of +1.3 m. (a) what is its acceleration? (b) What is its weight in newtons?
A 3.10 kg bucket of water is raised from a well by a rope. If the upward acceleration of the bucket is 4.80 m/s2, find out the force exerted by the rope on bucket of water.
find out the normal force for a laundry basket with a mass of 4.80 kg in each of the following situations (a) at rest on a horizontal surface (b) at rest on a ramp inclined at 12° above the horizontal (c) at rest on a ramp inclined at 25° above the horizontal (d) at rest on a ramp inclined at 45° above the horizontal
Two forces are applied to a car in an effort to accelerate it. The first force, F1 = 328 N, is applied at an angle α = 35° to the forward dashed line. The second force, F2 = 544 N, is applied at an angle β = 8° to the forward dashed line. (a) What is the resultant of these two forces? (b) If the car has a mass of 3150 kg, what acceleration does it have?