DP Physics (last assessment 2024)
Question 18M.2.HL.TZ1.b.iii
| Date | May 2018 | Marks available | [Maximum mark: 2] | Reference code | 18M.2.HL.TZ1.b.iii |
| Level | HL | Paper | 2 | Time zone | TZ1 |
| Command term | Calculate | Question number | b.iii | Adapted from | N/A |
b.iii.
[Maximum mark: 2]
18M.2.HL.TZ1.b.iii
An elastic climbing rope is tested by fixing one end of the rope to the top of a crane. The other end of the rope is connected to a block which is initially at position A. The block is released from rest. The mass of the rope is negligible.
The unextended length of the rope is 60.0 m. From position A to position B, the block falls freely.
At position C the speed of the block reaches zero. The time taken for the block to fall between B and C is 0.759 s. The mass of the block is 80.0 kg.
Calculate the magnitude of the average force exerted by the rope on the block between B and C.
[2]
Markscheme
3620 + 80.0 × 9.81
4400 «N»
Allow ECF from (b)(i).
[2 marks]
