A uniform ladder is 10 m long and weighs 400 n. it rests with its upper end against a frictionless vertical wall. its lower end
rests on the ground and is prevented from slipping by a peg driven into the ground. the ladder makes a 30◦ angle with the horizontal. the magnitude of the force exerted on the peg by the ladder is:
1 answer:
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Answer:v=41.23 m/s
Explanation:
Given
mass of heavy object
distance of from the axle
mass of rock
Length of rod
distance of from axle
Net torque acting is
Work done by is converted to rock kinetic Energy
thus
Where
