Question 4 [12Pts] The length of a crowbar used by a gold miner to lift a load of 120 kg is 2.65m (see Figure 4). The load arm is taken as 0.5 cm and the effort moved by 0. Im. Determine: i. The effort required to take the load up ii. The M.A of crowbar iii. The work done by the effort The displacement travelled by the load iv. V. vi. The work done by the load The efficiency of the crowbar Figure Q4: A crowbar