a body moves a distance of 5m along a straight line under the action of 10N if the work done is 25J then the angle which force makes with the direction of motion of the body is?
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apply the formula
W=F.s.cosa
now
25=10N.5m.cosa
. indicates multiply
25/50=cosa
cosa=1/2
cosa is 1/2 at an angle of 60°
hence a=60°
W=F.s.cosa
now
25=10N.5m.cosa
. indicates multiply
25/50=cosa
cosa=1/2
cosa is 1/2 at an angle of 60°
hence a=60°
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0
Answer:
Explanation:The iron rim is 1st heated due to which it expands. the rim gets fixed on the wheels. When the rim cools it contracts & makes a tight fit on the wheels.
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