7407/2 Physics Jun 2018 Quiz | AQA AS Level MCQ
AQA
AS Level
Physics (7407)
شهریور
2018
مشاهده نمونه سوال
شامل مباحث:
تعداد سوالات: 30
سطح دشواری:
متوسط
شروع:
آزاد
پایان:
آزاد
مدت پاسخگویی:
35 دقیقه
پیش نمایش صفحه اول فایل
zivar sushu A climber wears a harness attached to a rope. The rope passes through a brake. There is friction between the rope and the brake.
The climber uses the brake to descend at a steady speed of 0.50 m s$^{−1}$.
The combined mass of the climber, the harness and the brake is 60 kg.
What is the rate of energy transfer to the brake and rope?
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