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23 Nov 2019
A rope isused to pull a 3.57 kg block at constantspeed 4.86 m along ahorizontal floor. Theforce on the block from the rope is 7.82 Nandis directed 15° above the horizontal.(a) What is the work done by therope'sforce?
1 J
(b) What is the increase in the thermal energy of theblock-floorsystem?
2 J
(c) What is the coefficient of kinetic friction between theblockand floor?
3
A rope isused to pull a 3.57 kg block at constantspeed 4.86 m along ahorizontal floor. Theforce on the block from the rope is 7.82 Nandis directed 15° above the horizontal.
(a) What is the work done by therope'sforce?
1 J
(b) What is the increase in the thermal energy of theblock-floorsystem?
2 J
(c) What is the coefficient of kinetic friction between theblockand floor?
3
1 J
(b) What is the increase in the thermal energy of theblock-floorsystem?
2 J
(c) What is the coefficient of kinetic friction between theblockand floor?
3
Bunny GreenfelderLv2
27 May 2019
