Answered

Suriin ang IDNStudy.com para sa malinaw at detalyadong mga sagot. Ang aming komunidad ay nagbibigay ng eksaktong sagot upang matulungan kang maunawaan at malutas ang anumang problema.

A 5.0 kg mass is placed in an elevator that is accelerating upwards at 4.0 m/s2. What is the apparent weight of this mass?

Sagot :

Indrawboyidn

The apparent weight of this mass : 69.05 N

Further explanation

Newton's 2nd law explains that the acceleration produced by the resultant force on an object is proportional and in line with the resultant force and inversely proportional to the mass of the object

∑F = m. a

F = force, N

m = mass = kg

a = acceleration, m / s²

In elevators there are two possible movements:

  • 1. upward

then the forces that work

N - W = ma

N - mg = ma

N = ma + mg

N = m (a + g) ... equation 1

  • 2. down ward

then the forces that work

w - N = ma

mg - N = ma

N = mg - ma

N = m (g - a) ... equation 2

So the apparent weight :

  • upwards  ⇒ N = m (a + g)
  • downwards ⇒ N = m (g - a)

Known

m = 5.0 kg

a = 4.0 m/s²

The apparent weight :

Because an elevator that is accelerating upwards , then

N = m (a + g)

N = 5 (4 + 9.81)

N = 69.05 N

Learn more  

example of 2nd newtons law  

brainly.ph/question/128165  

Find the acceleration  

brainly.ph/question/110544  

brainly.ph/question/2207216  

uniformly accelerated motion  

brainly.ph/question/2132892  

#LetsStudy  

Pinahahalagahan namin ang bawat tanong at sagot na iyong ibinabahagi. Patuloy na maging aktibo at magbahagi ng iyong karanasan. Sama-sama tayong magtatagumpay. Ang IDNStudy.com ay nangako na sasagutin ang lahat ng iyong mga tanong. Salamat at bisitahin kami palagi.