Question

A crow br of length 2m is used to lift a stone of weight 200kg.If the fulcrum is set 50cm a part from the stone hiw much effort should be applied to the other end of the crow bar to balance it?

Answer 1

Answer:

hey mate!! here is your answer..

Step-by-step explanation:

Length of crow bar = 2m

length of load arm = 0.1M

length effort arm = length of crow bar -length of load arm

=2−0.1=1.9m

so, velocity ratio = length of effort arm/length of load arm = 1.9/0.1 = 19

use formula, velocity ratio = load/effort

19 = 100kgf/effort

effort = 100/19= 5.26 kgf

hence,5.26 effort is required.