Question

A 5m 60cm hight vertical role caste a shadow 3m 20cm long .find at the same time
1) The length of the shadow caste by another pole 10m 50cm high
2) The height of the pole which caste a shadow 5m long​

Answer 1

Answer:

According to the principle of moments when an object is in equilibrium the sum of the anticlockwise moments about a turning point must be equal to the sum of the clockwise moments. 

i.e Load × Load Arm = Effort × Effort Arm