Question

Practice Problems 2 :
grou 1. A cyclist and a person on a moped are acted upon by the same force. If the acceleration produced
2
by the cyclist is only th that of the moped, calculate the ratio of the masses of the cyclist
w and the moped.
5
[5:21​

Answer 1

Answer:

• 2.5:1  

Explanation:

• Let acceleration of moped =a1
• Let acceleration of cyclist=a2
• from given data
• acceleration produced by cyclist
• a1=2/5a2
• forces are equal
• therefore
• m1a1=m2a2
• m1×2/5a2=m2a2
• M1/m2=5/2:1  
• M1/m2=2.5:1

Answer 2

Explanation:

Answer

5.0/5

2

Snehaarya

Ambitious

28 answers

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Answer:

let the acceleration produce on mopped be a.

so, acceleration on cyclist will be (2/5)a.

now,

force on cyclist=force on mopped

or, mass of cyclist * acceleration on cyclist= mass of mopped* acceleration on mopped. ( f= ma)

or, mass of cyclist* (2/5)a= mass of mopped* a

or, mass of cyclist/ mass of mopped= a/{(2/5)a}

or, m of cylclist / m of mopped= 5a/2a

=5/2