4.3 Turning effects of forces 2021-2023 IG
Quiz
•
Physics
•
10th Grade
•
Hard
Lee Peng TUNG
FREE Resource
34 questions
Show all answers
1.
FILL IN THE BLANK QUESTION
1 min • 1 pt
A force F acts on an object at a distance x from a pivot.
Which two changes both increase the moment of the force about the pivot?
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The diagram shows a uniform rod with its midpoint on a pivot. Two weights X and Y are hung from the rod.
The rod is in equilibrium.
Which statement is correct?
The forces at X and Y have different values.
There is a resultant turning effect on the rod.
The resultant force on the rod is zero.
The rod does not have a centre of mass.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the unit for the moment of a force about a point?
W
Ns
N/m
Nm
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A spanner is used to tighten a nut on a bicycle wheel.
A force F is needed.
How can the force F be reduced?
Use a longer handle.
Use a shorter handle.
Use a thinner handle.
Use a thicker handle.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A wheelbarrow has a weight W of 140 N.
Which vertical force F is needed to support the wheelbarrow in the position shown?
60 N
80 N
140 N
245 N
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The diagram shows a metre rule MN on two supports, P and Q. Two loads are placed on the rule, as shown. The rule rests steadily on the supports.
Which row is correct?
total moment about M is clockwise, total moment about N is anticlockwise
total moment about M is clockwise, total moment about N is zero
total moment about M is zero, total moment about N is clockwise
total moment about M is zero, total moment about N is zero
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A metal rod of length 80 cm is pivoted at point O. Its centre of mass is at its mid-point. Four pulley wheels are indicated by the letter P. (Refer to the diagram.) The rod is in equilibrium, as shown.
What is the weight of the rod?
0.20 N
1.0 N
2.0 N
4.0 N
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