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WorksheetsPRE-UPS 2 SP015 2024/2025
Total questions: 13
Worksheet time: 13mins
The unit of work is Joule. The other physical quantity that has the same unit is ___________.
power
velocity
energy
force
Gravitational potential energy is the energy of an object due to its __________.
mass
position
motion
weight
When a body slides against a rough horizontal surface, the work done by friction is _____________.
zero
positive
negative
none of the above
When the direction of applied force and the direction in which the object moves are perpendicular, then __________.
no power is used
no work is done
power is used
work is done
Which statement relates to the principle of conservation of energy?
Energy can be created.
Energy can be transformed.
Energy can be destroyed.
All of the above.
Which of these statements is TRUE for uniform circular motion?
The direction of linear velocity is constantly changing.
The radius of circular motion is constantly changing.
The magnitude of linear velocity is constantly changing.
The magnitude of centripetal acceleration is constantly changing.
Centripetal acceleration is always directed __________.
towards the center of the circular path.
away from the center of the circular path.
in the direction of the object’s motion.
in the opposite direction of the object’s motion.
Consider a particle moving with constant speed such that its direction of acceleration is always perpendicular to its velocity. The particle is moving in a _________.
straight line.
circle.
parabolic path.
parabolic path.
All of the following are symbols for parameters in rotational motion EXCEPT ________.
θ
ω
α
a
Given τ = −30.4 N m.
Based on this statement, the turning effects of a rigid body is _______.
upwards.
clockwise.
downwards.
anticlockwise.
The moment of inertia of a body is independent of _________.
the position of the axis of rotation.
mass.
shape and size.
angular velocity.
In an isolated system, when the moment of inertia of a rotating body is increased, the angular velocity
will increase.
will decrease.
will be no effect.
first increase and then decrease.
An ice skater is spinning with arms folded inwards. Later the ice skater stretches his arms outwards. Which of the following is constant?
Angular displacement.
Moment of inertia.
Angular momentum.
Angular velocity.
