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Author Topic: phys doubt  (Read 5910 times)

Offline astarmathsandphysics

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Re: phys doubt
« Reply #15 on: March 06, 2010, 02:30:42 pm »
Can you upload the file again it may be corrupted
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Offline Phosu

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Re: phys doubt
« Reply #16 on: March 06, 2010, 04:53:36 pm »
i hope it works this time
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Offline astarmathsandphysics

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Re: phys doubt
« Reply #17 on: March 06, 2010, 06:23:55 pm »
Thanks
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Offline astarmathsandphysics

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Re: phys doubt
« Reply #18 on: March 06, 2010, 06:59:59 pm »
8)only A momentum and Kinetic energy both conserved

before
momentum2mu-mu=mu
kinetic enery =1/2*2m*u^2 +1/2*m*y^2=3/2mu^2

after
momentum 2m*-u/3+m*5u.3=mu
kinetic energy 1/2*2m*(u/3)^2+1/2*m*(5u/3)^2=3/2mu^2


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Offline astarmathsandphysics

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Re: phys doubt
« Reply #19 on: March 06, 2010, 07:10:13 pm »
B resolve if the tension is not vertical it must increse so the vertial component remains constant.
If the angle to the vertical increases the tension must increase further
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Offline Phosu

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Re: phys doubt
« Reply #20 on: March 16, 2010, 07:40:12 am »
M1 doubt

A car is towing a trailer along a straight horizontal road by means of a horizontal towrope.
The mass of the car is 1400 kg. The mass of the trailer is 700 kg. The car and the trailer are
modelled as particles and the towrope
as a light inextensible string. The resistances to motion
of the car and the trailer are assumed to be constant and of magnitude 630 N and 280 N
respectively. The driving force on the car, due to its engine, is 2380 N. Find
(a) the acceleration of the car,(3)

(b) the tension in the towrope.

could someone plz explain the B part, Thanks :)
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Offline astarmathsandphysics

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Re: phys doubt
« Reply #21 on: March 16, 2010, 08:20:18 am »
When I get up
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Offline astarmathsandphysics

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Re: phys doubt
« Reply #22 on: March 16, 2010, 08:31:16 am »
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Offline Assi1993

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Re: phys doubt
« Reply #23 on: March 16, 2010, 02:50:55 pm »
Quote from: Phosu on March 16, 2010, 07:40:12 am
M1 doubt

A car is towing a trailer along a straight horizontal road by means of a horizontal towrope.
The mass of the car is 1400 kg. The mass of the trailer is 700 kg. The car and the trailer are
modelled as particles and the towrope
as a light inextensible string. The resistances to motion
of the car and the trailer are assumed to be constant and of magnitude 630 N and 280 N
respectively. The driving force on the car, due to its engine, is 2380 N. Find
(a) the acceleration of the car,(3)

(b) the tension in the towrope.

could someone plz explain the B part, Thanks :)


tension is the force...its  g0nna b...mass times acceleration..
F= MAss x Acceleration !!...
!!!!!!..(unsure)..bt i think itz this wayyy
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Offline Phosu

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Re: phys doubt
« Reply #24 on: March 25, 2010, 05:21:25 pm »
c part
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Offline astarmathsandphysics

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Re: phys doubt
« Reply #25 on: March 25, 2010, 06:25:13 pm »
2 hours
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Offline astarmathsandphysics

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Re: phys doubt
« Reply #26 on: March 25, 2010, 10:34:45 pm »
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Offline Phosu

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Re: phys doubt
« Reply #27 on: March 26, 2010, 05:54:38 pm »
plz show how to solve
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Offline halosh92

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Re: phys doubt
« Reply #28 on: March 26, 2010, 07:05:26 pm »
Quote from: Phosu on March 26, 2010, 05:54:38 pm
plz show how to solve

whats the correct answer PHOSU :P
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everyday we wake up is a miracle, then how do we say miracles dont happen?????

Offline Phosu

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Re: phys doubt
« Reply #29 on: March 26, 2010, 07:21:25 pm »
its A
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