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Question 18M.2.HL.TZ1.a

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Date May 2018 Marks available [Maximum mark: 2] Reference code 18M.2.HL.TZ1.a
Level HL Paper 2 Time zone TZ1
Command term Calculate Question number a Adapted from N/A
a.
[Maximum mark: 2]
18M.2.HL.TZ1.a

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.

M18/4/PHYSI/SP2/ENG/TZ1/01

The unextended length of the rope is 60.0 m. From position A to position B, the block falls freely.

At position B the rope starts to extend. Calculate the speed of the block at position B.

[2]

Markscheme

use of conservation of energy

OR

v2 = u2 + 2as

 

v = « 2 × 60.0 × 9.81 » = 34.3 «ms–1»

 

[2 marks]

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