Question

The dogs of four-time Iditarod Trail Sled Dog Race champion Jeff King pull two 100-kg sleds that are connected by a rope. The sleds move on an icy surface. The dogs exert a 240-N force on the rope attached to the front sled. The front rope pulls horizontally.

Part A
Find the acceleration of the sleds.
Express your answer to two significant figures and include the appropriate units.
Part B
Find the force the rope between the sleds exerts on each sled.
Express your answer to two significant figures and include the appropriate units.

Answer 1

Answer:

(a) acceleration a = 1.2m/s2

(b) force F = 100N on each sled

Step-by-step explanation:

The explanation is in the attached file below

Answer 2

Part a)

`a = 2.4 m/s^2`

Part b)

`F = 120 N`

Step-by-step explanation:

Two sleds are connected by a rope

mass of each sled is given as

`m = 100 kg`

now we know that dog exert pulling force on the rope connected to first sled

`F = 240 N`

Part a)

By newton's first law we know that

`F = (m + m)a`

`240 = (100 + 100)a`

`a = (240)/(100)`

`a = 2.4 m/s^2`

Part b)

As we know that force between two ropes will pull the sled behind

so we will have

`F = ma`

`F = 100(1.20)`

`F = 120 N`