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:

Part a)

$a = 2.4 m/s^2$

Part b)

$F = 120 N$

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

$F = (m + m)a$

$240 = (100 + 100)a$

$a = \frac{240}{100}$

$a = 2.4 m/s^2$

Part b)

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

so we will have

$F = ma$

$F = 100(1.20)$

$F = 120 N$

Answer 2

Answer:

Answer:

(a) acceleration a = 1.2m/s2

(b) force F = 100N on each sled

Explanation:

The explanation is in the attached file below