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WorksheetsRotational motion , torque
Total questions: 10
Worksheet time: 7mins
Two bodies A and B initially,at rest, move towardseach otherunder mutual force of attraction.At the instant when the speed of A is v and that of B is 2v, the speed of the centre of mass of bodies is
3v
2v
v
0
Which one is a vector quantity?
energy
torque
both of these
none of these
If F is force and r is the radius vector, then torque is given by
r x F
r.F
F x r
none of these
A wheel starting from rest is rotating with a constant angular acceleration of 3rad/s2. What is its angular acceleration after 4s?
25rad
24rad
12rad
22rad
Condition for maximum torque is
θ = 90 degree
θ =180 degree
θ = 0 degree
not defined
Torque depends on
force
moment arm
mass
force and moment arm
Along which a force act
line of action of force
line of acting torque
axis of rotation
moment arm
moment arm is
parallel distance
perpendicular distance
normal distance
resultant force
How much force would Joe have to apply perpendicular to create 550 Nm of torque 0.20 meters away from the bolt he is trying to loosen?
2250N
1250N
2750N
1550N
Unit of torque is
Nm
J
N/m
Watt
