A spring balance is graduated from O to 16 kg. When is reads 16 kg the spring is stretched by 10 cm. A body suspended from the spring is found to oscillate vertically with a frequency 2 oscillations per second. What the weight of the body ?

The two ends of a spring balance are pulled each by a force of 10 kg wt. What will be the reading of the balance?

A mass m attached to a spring oscillates with a period of 2 seconds. If the mass is increased by 2 kg, the period increases by one second. Find the mass m.

A body of mass 1 kg is made to oscillate in turns on springs of force constant 16 N/kg. Deduce the angular frequency.

A bob of mass 0.1 kg hung from the ceiling of a room by a string 2 m long is set into oscillation. The speed of the bob at its mean position is 1 m s^1. What is the trajectory of the bob if the string is cut when the bob is (a) at one of its extreme positions, (b) at its mean position.

Calculate the gain in kinetic engery of a body of mass 10 kg after falling from rest for 2 seconds.

What is the kinetic energy of a body of mass 50 kg after it has fallen from rest for 5 seconds? (g = 9.8 m/s^2 )