Turning Effect of Forces
The number of forces that can be added by head to tail rule are
4
2
5
any number
any number
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Two children sitting on a see saw are not swinging, the net torque isA. greater than 1
B. less than 1
C. zero
D. infinite
A man is pulling a trolley on a horizontal road with a force of 100 N making 45 ยฐ with the road. The horizontal and vertical components will be
A. 52.5 N, 85.09 N
B. 55.6 N, 78.6 N
C. 60.3 N, 54.11 N
D. 70 N, 29.23 N
When the resultant torque acting on a body is zero, then the body satisfies
A. 2nd condition for equilibrium
B. third condition for equilibrium
C. no equilibrium state
D. first condition for equilibrium
If the force is applied at the center of mass then torque is
A. maximum
B. zero
C. 1
D. infinity
Splitting up of a force into two mutually perpendicular components is called the
A. determination of that force
B. subtraction of the forces
C. resolution of that force
D. line of action of that force
A boy tightens the nut of a car using a 16 cm long spanner by applying a force of 180 N. The torque will be
A. 2880 N m
B. 28.8 N m
C. 30 N m
D. 11.25 N m
If the sum of clockwise momentum is equal to sum of anti-clockwise momentum then body is in
A. zero gravity
B. balanced
C. imbalanced
D. non equilibrium
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