PHYSICS (PHY 101)
From Newton’s law of gravitation, the force of attraction between a body of mass m1 and another body of mass m2, separated by a distance r is given by the equation:
Find the dimension for the gravitational constant G.
What is the resultant force when a 25N force acting to the north and another 55N force acting to the south are applied on an object?
For what values of a are and perpendicular?
Find the maximum speed with which an unpowered car of mass 1200kg can take at a corner of radius 15m, if the coefficient of friction between the tyres and the road is
A 30kg block is suspended from a rope and lowered from a height of 15m to a height of 3m, experiencing a downward acceleration of 2ms-2. Find the work done on the block by the rope.