Physics Past Questions and Answers

If the force of attraction between the sun and the 1 planets is removed; the planets will

A Fall towards the sun
B Scatter and stop moving
C Continue to move at tangent to their original orbits
D Continue to move perpendicular to their original orbits. '

Question 2852:

A 15kg mass, suspended from a ceiling, is pulled aside with a horizontal force, F, as shown in the diagram above. Calculate the value of the tension, T. (g = 10ms^-2)

A 300.0N
B 173.2N
C 30.0N
D 17.3N

Question 2853:

A pendulum bob executing simple harmonic motion has 2cm and 12Hz as amplitude and frequency respectively. Calculate the period of the motion.

A 2.00s
B 0.83s
C 0.08s
D 0.60s

Question 2854:

A trolley of mass 4kg moving on a smooth horizontal platform with a speed of 1.0ms^-1 collides perfectly with a stationary trolley of the same mass on the same platform. Calculate the total momentum of the two trolleys immediately after the collision.

A 0.5Ns
B 1.0Ns
C 4.0Ns
D 8.0Ns

Question 2855:

The ice point of an ungraduated mercury-in-glass thermometer is X, while its steam point is 90^o. This thermometer reads 60^o when the true temperature is 40^oC Calculate the value of X.

A 60^o
B 48^o
C 40^o
D 30^o