I want the ideas for solving those questions

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The discussion focuses on solving two physics problems related to simple harmonic motion (SHM). The first problem involves a steam engine piston with a crank rotating at 150 rpm, requiring calculations for velocity and acceleration at 0.8 m from the center. The second problem pertains to a body in SHM with a 1-meter amplitude and a 2-second period, asking for velocity and acceleration after 0.4 seconds from the mean position. Key considerations for solving these problems include understanding the formulas for velocity and acceleration in SHM, as well as the relationships between amplitude, angular frequency, and time. Participants are encouraged to share their insights and methodologies for approaching such SHM questions.
manal950
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Hi all

How are you ...

I want the ideas or for solving those questions .

1 ) The piston of steam engine moves with simple Harmonic motion .
The crank rotates at 150 rpm and the stroke length is 2 m . Find the velocity and acceleration of the piston when it is at a distance of 0.8 m from the center .

2 ) A body moving with simple harmonic motion has an amplitude of 1 meter and the time for one complete oscillation is 2 seconds . Determine the velocity and acceleration of the body after 0.4 second from the mean position ?

I want the ideas for solving those questions and please tell what the considerations take on solve like those questions
 
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