MINISTRY OF EDUCATION
SECONDARY ENGAGEMENT PROGRAMME
9
GRADE 10
TRIMESTER 2 PHYSICS HOMEWORK #1
Week 7
Worksheet
1. What is the unit of a moment?
a. Newton (N)
c. Newton per metre (N/m)
b. Newton metre (Nm)
d. meter
2. What name is given to the shortest distance between a line of action of a force and the
pivot?
A. Rotational distance
C. Perpendicular distance
B. Parallel distance
D. Length of balance
3. What is the moment of a 6 N force acting 1.5 m from a pivot?
A. 9 N/m
C. 4 Nm
B. 9 Nm
D. 7.5 Nm
4. The moment of a force is 24 N.cm. What size is the force if it acts 8 cm from the pivot?
A. 0.3 N
C. 3 N
B. 72 N
D.32 N
5. What is the principle of moments?
A. Total clockwise force = total anticlockwise force
B. Total clockwise moment = total anticlockwise moment
C. Total clockwise energy = total anticlockwise energy
D. Total clockwise length = anticlockwise length
6. Two identical weights are attached to opposite ends of a beam. Both are 1 m from the
pivot. What happens if the right-hand weight is moved closer to the pivot?
A. The beam rotates clockwise
B. The moment of the left-hand weight decreases
C. The beam rotates anticlockwise
D. The beam is balanced
7. What will be the effect of using a longer lever to apply a force further from the pivot?
A. The turning effect will increase
B. There will be no difference in the turning effect
C. The turning effect will decrease
D. There will not be a change
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