Take the second formula as an example W Fs. If a force is applied to a mass but there is no displacement due to.
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18102008 Work calculated by using WFs provides us with the energy requiredused.
W=fs physics. In general W Fs cos F s a For the girl W 18 N 4 m cos 0 0 18 N 4 m 1 72 J. When θ is 0 the force is in the direction of motion then cos θ 1 and W Fs. The other way is to increase the Displacement but that cannot be done as the length of the Table is fixed technically lobbing or looping the ball will increase the Work done as the ball has to cover a larger distance than ball that barely clears the net.
Up to consider from surrounding or system next step --. Calculate the unknown variable in the equation for work where work is equal to force multiplied by displacement. 21072017 W FS cos90 o FS x 0 0 ii For maximum work done the angle between force and displacement should be 0 o as cos0 o 1 Hence WFScos 0 o FS.
10102010 W Fs P FA so F PA so W PAs Because s distance and A Area so As V and because Pressure from surrounding is constant so dW -P dV In physics maybe dW P dV. When there is no displacement S 0 and When the displacement is normal to the direction of the force θ 90 o. This is the correct notation.
B For the boy W 12 N 4 m cos 180 0 12 N 4 m -1. 05mu2 Conversely if work is done on a body the gain of kinetic energy when its velocity increases from zero to u can be shown to be 05mu2. PHYSICS YEAR 12 4 FORMULAE AND DATA BOOKLET The Standard Model Elementary particles Note.
W Fs cos θ. Kinetic energy of body W Fs mas since Fma msu22s since au22s Therefore ke. W Fs If the amount of Force is increased then the Work coefficient is increased.
Free online physics calculators mechanics energy calculators. After time t its velocity becomes v at point B. This may not always be cos θ since this is just for horizontal motion.
BftexttextbfPowerfractexttextbfenergy transferredtexttextbftime PfracEt Power from work done. Power from energy transferred. Always consider the horizontal and vertical components of the force.
24052019 Anyway this is the Physics and Mathematics of Table Tennis in the Newtonian Universe. W Fs ΔE v2 mv r r a c F. P when energy E is transferred in a time t.
Efficiency useful power out total power in. For vertical motion it would be sin θ. 28032021 If force F is applied on it it moves with constant acceleration a.
P when some work W is done in a time t. Let S be the displacement covered by the body in time t. 23022014 Work is done when a force moves the object in the direction of the force and is given by the product of the force and the distance moved in the direction.
Then the amount of work done on moving from A to B is. Efficiency useful energy out total energy in. Electromagnetic spectrum Frequency 106 102 10 1 10-1 10 2 10-3 10 4 10-5 106 10 7.
The above list is for the AQA examination board. Shaded areas represent regions of overlap. W Fs cos θ where F is applied force s is objects displacement while the force is applied and θ is angle between applied force and displacement.
When two letters are next to each other it means multiplication. W F s cos F s or work is the product of the force and the component of the displacement s cos F s in the direction of the force. Or W ma s.
Two conditions when the work done is zero are. Where θ is the angle in degrees between the direction of the force and the motion. W Fs Where W Work F Constant Force N S Distance moved in the direction of the force m SI Unit for work is joules J One joule is defined as the work done when a force of 1N moves an object through a distance.
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