A pivoted beam supports a load P at one end and a load Q at the other end.
The weight of the beam can be ignored.
30 cm 70 cm
P Q
pivot
The beam is balanced.
Which row gives possible values for P and for Q?
P/N Q/N
A 21 7
B 21 9
C 30 10
D 30 70
Answers
Answered by
1
Answer:
A pivoted beam supports a load P at one end and a load Q at the other end.
The weight of the beam can be ignored.
30 cm 70 cm
P Q
pivot
The beam is balanced.
Which row gives possible values for P and for Q?
P/N Q/N
A 21 7
B 21 9
C 30 10
D 30 70
Answered by
1
Answer:
B. 21 9
Explanation:
Clockwise moment =Anticlockwise moment
30×21 = 70×9
630 = 630
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