WorksheetsDPP 1 -Force
Total questions: 10
Worksheet time: 10mins
1. The moment of couple is mathematically the:
product of one force and the perpendicular distance between two forces
product of both forces and the perpendicular distance between them
product of one force and the perpendicular distance between the point of application of force and turning point.
None of the above.
A force F acts on a rigid body capable of turning around a fixed point. The moment of force depends upon:
magnitude of force F
magnitude of perpendicular distance between the point of action of force and the turning point
both (a) and (b)
none of these
The perpendicular distance between the point of application of force and the turning point is 1.75 m, when a force of 80 N acts on a rigid body. Calculate the moment of force.
180 Nm
140 Nm
220 Nm
370 Nm
The diagram alongside shows a force F = 5 N acting at point A produces a moment of force of 6 Nm about point O. What is the diameter of the wheel?
1.0 m
4.6 m
2.4 m
3.4 m
Study the diagram alongside and calculate the moment of couple.
1 Nm
6 Nm
2 Nm
4 Nm
A uniform metre scale is balanced at 20 cm mark, when a weight of 100 gf is suspended from one end. Where must the weight be suspended? Calculate the weight of the metre scale.
11.11 gf
66.66 gf
77.77 gf
88.88 gf
A uniform wooden beam, 80 cm long and weighing 250 gf, is supported on a wedge as shown in the figure. Calculate the greatest weight which can be placed on end A without causing the beam to tilt.
100 gf
375 gf
560 gf
750 gf
A practice of mass m is executing a uniform circular motion on a path of radius r. If p is the magnitude of its linear momentum, then what is the radial force acting on the particle?
mrp2
pr
p2rm
mp
What type of motions are exhibited by a vehicle and its wheels?
Translatory
Translatory and rotatory
Rotatory
None of these
A see-saw 8 m long is balanced in the middle. Two children of mass 30 kgf and 40 kgf are sitting on the same side of the fulcrum at a distance of 1.5 m and 3.5 m from the fulcrum respectively. Where must a lady weighing 60 kgf sit from the fulcrum, so as to balance the see-saw?
2.17 m
3.08 m
4.15 m
6.15 m
