Which planet has the most gravity and why
2 answers:
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Answer:
The magnitude of the tangential velocity is
The magnitude of the resultant acceleration at that point is
Explanation:
From the question we are told that
The mass of the uniform disk is
The radius of the uniform disk is
The force applied on the disk is
Generally the angular speed i mathematically represented as
Where is the angular displacement given from the question as
is the angular acceleration which is mathematically represented as
The moment of inertial is mathematically represented as
Substituting values
Considering the equation for angular acceleration
Substituting values
Considering the equation for angular velocity
Substituting values
The tangential velocity of a given point on the rim is mathematically represented as
Substituting values
The radial acceleration at hat point is mathematically represented as
The tangential acceleration at that point is mathematically represented as
Substituting values
The magnitude of resultant acceleration at that point is
Substituting values
Answer:
1185 N
Explanation:
From Newton’s second law of motion,
F=ma where m= mass of motorcycle, a is acceleration of the motorcycle and F=Force
Net force acting on motorcycle is given by
Where F is force acting on motorcycle and f is frictional force
Substituting F-f for
hence ma= F- f Substituting a with 3, m with 245Kg and f with 450N as provided
245*3= F- 450
F=245*3 +450= 1185 N