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  • 1 answers

Isha Gupta 8 years, 3 months ago

For Max height and for max time, angle=90
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Bhawani Tanwar 8 years, 3 months ago

Upward or downward.
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Rahul Poddar 8 years, 3 months ago

Straight line from origin in x-y plane
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Kamal Sharma 5 years, 4 months ago

The free body diagram of cylinder w.r.t carriage is as shown. Since net acceleration of cylinder is horizontal, NABcos30∘=mg or NAB=23–√mg F.B.D of cylinder w.r.t to carriage and NBC=ma+NABsin30∘ Hence NAB remains constant and NBC increases with increase in a.
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Rahul Poddar 8 years, 3 months ago

The total mechanical energy of a body is conserved during free falling It can be prove by free falling body diagram given in ncert
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Bhawani Tanwar 8 years, 3 months ago

When workdone takes place in the direction of the applied force .
  • 1 answers

Sahdev Sharma 8 years, 3 months ago

The Four Fundamental Forces of Nature are Gravitational force, Weak Nuclear force, Electromagnetic force and Strong Nuclear force.

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Rahul Poddar 8 years, 3 months ago

The effective weight of pulley when it is pulled is W-Fsin thita 2nd- effective friction on pulley is Fr=u (mg-Fsin thita)
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Drishty Kamboj 8 years, 3 months ago

Examples 1-a cycle is moving with 5km/hr but by a sudden push make a cycle to move 7km/hr It means that the external force exerted on body leads change in its speed 2-an electronic remote control car is moving with a uniform speed and a boy appliedv force in one side of the car this leads change in object direction W. R. T. The initial direction 3a plastics ball change its shape on applying external force
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Drishty Kamboj 8 years, 3 months ago

Take a glass a paper and a ₹5 coin. Put the paper up the glass and the coin on the paper. When you make a moderate hit on paper, paper will fall away from glass and the coin fall in the glass. This is due to it's inertia
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Bhawani Tanwar 8 years, 3 months ago

It is the rate of change of displacement .

Drishty Kamboj 8 years, 3 months ago

Speed in a particular direction is velocity
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Anjali Garg 8 years, 3 months ago

Soory pull is easier then pushing because we have to applied less force on pulling

Anjali Garg 8 years, 3 months ago

Pushing is easier because we have to applied less force on pushing
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Amar Kumar 8 years, 3 months ago

One mechanical horsepower unit is approximately equal to 745.7 watt.

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